Real-time alerts

Speaking about the new Tube tracking system, Thijs van As, Associate Product Manager, Google Transit, said: "Ahead of a busy summer in London, we are bringing real time service alerts for the London Underground to Google Maps.

"We'll let you know of any disruptions on the Underground that are happening at the time you need them most."

The Tube information will be updated every 30 seconds and the whole thing is colour coded – with good service route tinted given the greenlight and delayed ones the red light, which is a little unfair on the Central line but there you go.